Founded Year



Grant - III | Alive

Total Raised


About Subtle Medical

Subtle Medical is a medical imaging software company that develops a suite of deep learning software solutions to improve image quality and enable up to 4x faster scan times for PET and MRI. SubtleMR and SubtlePET utilize deep learning algorithms that integrate with any scanner and PACS system with no change in the imaging specialists’ workflow.

Subtle Medical Headquarter Location

883 Santa Cruz Ave Suite 205

Menlo Park, California, 94025,

United States

Subtle Medical's Product Videos

ESPs containing Subtle Medical

The ESP matrix leverages data and analyst insight to identify and rank leading companies in a given technology landscape.

Healthcare / Healthcare Providers

Solutions that leverage machine learning and computer vision for image acquisition, disease detection, triaging, and diagnosis from ultrasounds, MRIs, CT scans, and more.

Subtle Medical named as Highflier among 9 other companies, including, Zebra Medical Vision, and Shukun Technology.

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Subtle Medical's Products & Differentiation

See Subtle Medical's products and how their products differentiate from alternatives and competitors

  • SubtleMR

    SubtleMR is an AI-based software solution that enhances up to 60% faster MRI. It applies two methods of image enhancement, denoising and super resolution, to improve image quality. This software is applicable for the majority of body parts and compatible with all scanner brands. SubtleMR is a quick and seamless remote deployment and fits seamlessly into existing clinical workflows. The radiologist and technologists read the image as they would in their normal workflow. Capturing faster, high resolution images frees up time on the scanners for additional scans to be added per day increasing the throughput and productivity of hospitals. By scanning more patients a day, hospitals can reduce wait times for exams by multiple days. (CE Marked and FDA Cleared)


    Subtle Medical operates in the initial stage of the medical imaging workflow, while the patient is in the scanner and the image is being taken. This distinguishes it from the vast majority of AI rad… 

    Because Subtle Medical does not focus on diagnostics, it faces much less competition than most companies operating in the AI radiology space. Large OEMs like GE and Siemens could be considered compe… 

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Research containing Subtle Medical

Get data-driven expert analysis from the CB Insights Intelligence Unit.

CB Insights Intelligence Analysts have mentioned Subtle Medical in 4 CB Insights research briefs, most recently on Feb 21, 2022.

Expert Collections containing Subtle Medical

Expert Collections are analyst-curated lists that highlight the companies you need to know in the most important technology spaces.

Subtle Medical is included in 8 Expert Collections, including Artificial Intelligence.


Artificial Intelligence

9,051 items

This collection includes startups selling AI SaaS, using AI algorithms to develop their core products, and those developing hardware to support AI workloads.


Medical Devices

11,590 items

Companies developing medical devices (per the IMDRF's definition of "medical device"). Includes software, lab-developed tests (LDTs), and combination products. *Columns updated as regularly as possible.


Biopharma Tech

5,241 items

Companies involved in the research, development, and commercialization of chemically- or biologically-derived therapeutic & theranostic drugs. Excludes vitamins/supplements, CROs/clinical trial services.


AI 100

100 items

The winners of the 4th annual CB Insights AI 100.


Health Monitoring & Diagnostics

2,707 items

Companies developing or offering products that aid in the assessment, screening, diagnosis, or monitoring of a person's state of health/wellness. Excludes companies focused solely on fitness/sports performance


Digital Health 150

150 items

The winners of the second annual CB Insights Digital Health 150.

Subtle Medical Patents

Subtle Medical has filed 2 patents.

The 3 most popular patent topics include:

  • Artificial neural networks
  • Magnetic resonance imaging
  • Medical imaging
patents chart

Application Date

Grant Date


Related Topics



Magnetic resonance imaging, Medical imaging, Neuroimaging, Nuclear magnetic resonance, Artificial neural networks


Application Date


Grant Date


Related Topics

Magnetic resonance imaging, Medical imaging, Neuroimaging, Nuclear magnetic resonance, Artificial neural networks



Latest Subtle Medical News

07:15 ET Subtle Medical Awarded Federal SBIR Grant for Safer Fluoroscopy Exams

Jan 26, 2022

Subtle's AI Aims to Achieve a 6x Reduction in Radiation Dose of Fluoroscopy Exams News provided by Share this article Share this article MENLO PARK, Calif., Jan. 26, 2022 /PRNewswire/ --  Subtle Medical was awarded an NIH SBIR grant to develop an innovative artificial intelligence (AI)-powered software, SubtleIR™, which uses deep learning (DL) to reduce radiation dosage needed during fluoroscopy exams. The development of the new software is aligned with the company's mission to accelerate access to faster, safer, and smarter medical imaging. Subtle continues to expand product lines in an effort to build a comprehensive ecosystem of solutions that support all imaging needs. Fluoroscopy is a common tool for image-guided interventions in 50 million surgeries performed  annually in the US alone. The new software will potentially reduce radiation exposure in the operating room, minimizing the  risk of cancer development for both patients and radiology staff. Centers will be able to deliver safer low-dose fluoroscopy exams without sacrificing the clinical quality of the images "Receiving this SBIR grant will allow us to meet the demand for new AI applications that support image guided therapy and surgeries. With this technology, hospitals and imaging centers will be able to deliver safer low-dose fluoroscopy exams without sacrificing the clinical quality of the images," says Enhao Gong, PhD, Co-founder & CEO. "We appreciate the NIH's support in the development of this novel AI product and look forward to deploying it in clinical settings." Subtle aims to enhance fluoroscopy videos acquired with up to 83% lower dose levels into videos with full-dose quality. This conversion will be performed in real-time, such that the surgeon can receive video feedback without delay while greatly reducing radiation exposure to both the patient and operating clinicians. In addition, Subtle aims to optimize the processing speed of these DL models by leveraging various software and hardware accelerations for real-time application to achieve over a 30 fps processing rate, which will enable a seamless integration between video capture and subsequent display. Recent research on SubtleIR's technology was published at MICCAI showing a 4x dose reduction while providing equivalent or better video quality to the normal dosage level, as supported by quantitative metrics and surgeon review. This is the second NIH SBIR grant Subtle Medical has been awarded. The first was for SubtleGAD™ , an AI-based software using deep learning to drastically reduce contrast dosage needed during contrast-enhanced medical imaging exams. Subtle recently announced a collaboration with Bayer to explore potential new areas for contrast media use with the SubtleGAD™ technology. Subtle Medical's SubtleIR™ research is supported by the National Institute Of Biomedical Imaging And Bioengineering of the National Institutes of Health under Award Number R43EB031655. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. SubtleIR™ is an investigational product and is limited by federal law to investigational use. To learn more about SubtleIR™, please contact [email protected] . About Subtle Medical Subtle Medical is a global healthcare technology company with a suite of deep learning solutions, including SubtlePET™ and SubtleMR™, that increase the quality and efficiency of medical imaging. Subtle's deep learning solutions are deployed in top academic hospitals and leading imaging institutions worldwide. It was named CB Insights Top AI 100 and Digital Health 150 company in 2020 and is an Nvidia Inception Award Winner. For more information, please visit or email [email protected] . Media Contact:

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Subtle Medical Rank

  • When was Subtle Medical founded?

    Subtle Medical was founded in 2017.

  • Where is Subtle Medical's headquarters?

    Subtle Medical's headquarters is located at 883 Santa Cruz Ave, Menlo Park.

  • What is Subtle Medical's latest funding round?

    Subtle Medical's latest funding round is Grant - III.

  • How much did Subtle Medical raise?

    Subtle Medical raised a total of $22.18M.

  • Who are the investors of Subtle Medical?

    Investors of Subtle Medical include Small Business Innovation Research Awards, Baidu Ventures, Data Collective, Fusion Fund, Foothill Ventures and 17 more.

  • Who are Subtle Medical's competitors?

    Competitors of Subtle Medical include Cerebriu and 5 more.

  • What products does Subtle Medical offer?

    Subtle Medical's products include SubtleMR and 1 more.

  • Who are Subtle Medical's customers?

    Customers of Subtle Medical include RadNet, Inc., St. Jude's Children's Hospital , Middlesex Health, Hoag Hospital and Affidea, Italy.

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